QEMU up to 8.2.1 hw/pci/pcie_sriov.c register_vfs buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU up to 8.2.1 and classified as critical. Affected by this issue is the function register_vfs of the file hw/pci/pcie_sriov.c. Such manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2024-26327. No exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in QEMU up to 8.2.1 (Virtualization Software). Affected by this issue is the function register_vfs of the file hw/pci/pcie_sriov.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF implementations.

The weakness was published 02/19/2024. The advisory is available at lore.kernel.org. This vulnerability is handled as CVE-2024-26327 since 02/19/2024. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at lore.kernel.org.

The vulnerability is also documented in the databases at Tenable (209571) and CERT Bund (WID-SEC-2024-0412). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source QEMU

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: lore.kernel.org

Timelineinfo

02/19/2024 🔍
02/19/2024 +0 days 🔍
02/19/2024 +0 days 🔍
07/25/2025 +522 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: lore.kernel.org
Status: Confirmed

CVE: CVE-2024-26327 (🔍)
GCVE (CVE): GCVE-0-2024-26327
GCVE (VulDB): GCVE-100-254090
CERT Bund: WID-SEC-2024-0412 - QEMU: Mehrere Schwachstellen ermöglichen nicht spezifizierte Angriffe

Entryinfo

Created: 02/19/2024 08:06
Updated: 07/25/2025 20:52
Changes: 02/19/2024 08:06 (19), 02/19/2024 08:07 (22), 10/25/2024 05:47 (17), 05/07/2025 15:05 (11), 07/25/2025 20:52 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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